<template>
  <div class="tabs">
    <el-tag
        v-for="(item, index) in tags"
        :key="item.path"
        :closable="item.name !== 'home'"
        :effect="$route.name === item.name ? 'dark' : 'plain'"
        size="small"
        @click="changeMenu(item)"
        @close="handleClose(item,index)">
        {{ item.label }}
  </el-tag>
  </div>
</template>

<script>
import {mapState, mapMutations} from 'vuex'
export default {
    name:'CommonTag',
    data() {
        return {}
    },
    computed: {
        ...mapState({
            tags: state => state.tab.tabsList
        })
    },
    methods: {
        ...mapMutations(['closeTag']),
        //点击tag跳转的功能
        changeMenu(item) {
            // console.log(item);
            this.$router.push({name: item.name})
        },
        //点击tag删除功能
        handleClose(item,index) {
            //调用store中的mutation
            this.closeTag(item)
            const lenght = this.tags.lenght
            //删除之后的跳转逻辑
            if(item.name !== this.$route.name) {
                return
            }
            //表示删除的是最后一页
            if (index === lenght) {
                this.$router.push({
                    name:this.tags[index -1].name
                })
            } else {
                this.$router.push({
                    name:this.tags[index].name
                })
            }
        }
    }
}
</script>

<style lang="less" scoped>
    .tabs {
        padding: 20px;
        .el-tag {
            margin-right: 15px;
            cursor: pointer;
        }
    }
</style>